Twitter is an interesting source because about 3 per cent of Twitter accounts opt-in to show their Tweet location (using GPS from a smartphone) and can be visualised on a map.

Our method of anthroponomical classification can be summarized as follow: judging from the Twitter name only and the publicly available list of all ~150k Olympic athletes since 1896, for which team would the person most likely run (of France, Spain, Germany)?

NamSor Applied Onomastics is a European vendor of name recognition software (NamSor sorts names), which aims to help understand international flows of money, ideas and people. namsor.com